<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
        <div id="app">
            <input type="radio" :checked="picked">
            <label>单选按钮</label>
        </div>
        <script src="https://cdn.jsdelivr.net/npm/vue"></script>
        <script>
            var app = new Vue({
                el:'#app',
                data:{
                    picked:true
                }
            })
        </script>
</body>
</html>